I am a tech for a company that deals in point of sale software for cafeterias. Recently and inexplicably, one of our districts had systems in two locations that would go black screen. Monitor light is on, all power settings are set to never and only a reboot brings the system back on. I appears as if the problem only occurs during operation of the sales software. I made sure all updates and patches were applied. The district has several cafeterias but only two are having the problem. The software is MSSQL based. I would normally think this would be strictly in the software, except that we just got a call from another district having the same problem. But they are using a different sales software, Older windows version, different hardware, but exact same problem. None are hooked into the internet and each are servers with one or more slave systems. Specs below District 1: Celeron 2.4, 512 meg ddr, integrated p4m266a video, winxp pro sp2, MSSQL District 2 Celeron 1.7, 128 meg, integrated SIS 961 video, Win 98 se.